I am also a Christian.. I honestly sometimes feel like this battle with panic/anxiety is literally a fight against the pits of Hell.
I am going through a new bible study called, "Believing God" and already (on day 3) God is using it to transform my thinking about WHAT He is able to do (which is anything).
Nothing is too hard for Him... certainly not anxiety attacks or depression. So I will just keep believing that as long as I continue to run to Him, lean on Him, and trust Him, that although I MIGHT battle this the rest of my life.. it's a battle that I can WIN through Christ.
God has a reason for allowing us to go through this, if nothing else, to just have a compassion for other's that suffer in the same way.
Regardless, we know where (and to whom) our hope lies and we have confidence that we will be faithfully rewarded for seeking Him..
Keep pressing on!